Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

M6.0 - 68km SSW of Bunisari, Indonesia - Sunda Activity

  1. Apr 6, 2016 #1


    User Avatar
    Staff Emeritus
    Science Advisor

    There's been some activity along the Sunda trench, the region where the Australia plate interacts with the Eurasia plate (Sunda Plate) along the southern border of Indonesia. I'm wondering if we'll see a Mag 7.0 or greater soon.

    2016-04-06 14:45:30 (UTC)
    Location: Lat 8.198°S, Long 107.419°E
    Depth: 35.4 km (22.0 mi)

    M5.7 - 232km NNW of Saumlaki, Indonesia
    2016-04-06 20:35:15 (UTC)
    Location: Lat 6.031°S, Long 130.450°E
    Depth: 127.3 km (79.1 mi) - deep



    Well, I just remembered the Mag 7.8 about a month ago.
  2. jcsd
  3. Apr 9, 2016 #2
    Any probability calculations?
  4. Apr 9, 2016 #3


    User Avatar
    Science Advisor
    Gold Member
    2017 Award

    Oops missed responding to this thread
    I hadn't bothered to post the seismogram for it as it wasn't anything spectacular to look at

    but just to point out this M6.0 was within the subduction zone

    The last 2 significant events in this area were .....

    a M 7.7 July, 2006
    a M7.0, Sept 2009
    http://earthquake.usgs.gov/earthquakes/eqarchives/poster/2009/20090902.php [Broken]

    whereas this one ....

    This event was well west of the trench and the subduction zone. It is more directly related to the long transform faults in that region

    I haven't been able, so far, to find any information for such in the Indonesia region

    Last edited by a moderator: May 7, 2017
  5. Apr 9, 2016 #4


    User Avatar
    Staff Emeritus
    Science Advisor

    I'm doing a list of the Sunda/Java trench region over the last 20 years. I need to sort the data. There seems to be two active regions with respect to Mag 7+; one is in the east from Sulawesi through Banda Sea to Pupua, and the other is in the west including western Java and Sumatra. Interestingly, central and eastern Java, Kalimantan and Western Sulawesi don't seem to have Mag 7 earthquakes, at least not during the last 20 years.

    I'll do a separate set for Mag 6 - 6.9.

    I'd really like a graphic software that can do a 3D image of the earth's surface with the location (dot) and some details of each earthquake in a given shell element.

    I was planning to do a event (mag) vs time plot to see if there is some way to discern a probability.

    Attached Files:

  6. Apr 9, 2016 #5
    This is as close as I can get, note the boxes checked in side pane.
    GE Earthquakes.PNG
  7. Apr 9, 2016 #6


    User Avatar
    Science Advisor
    Gold Member
    2017 Award

    The map you posted shows a huge seismic gap between eastern Java, through the Bali region and onto the Timor region
    That would be a good section of the zone to suspect a decent event in the future

  8. Apr 10, 2016 #7


    User Avatar
    Science Advisor
    Gold Member
    2017 Award

    Hi Astronuc

    wonder if by any chance you know Alan Jones, Research Scientist PhD (1964) Purdue University

    I have been using a couple of programs of his for many, many years ( well back into the mid '90's )
    Seis/eruption and SeismicWaves

    Using the Seis/eruption prog, found that even going back to Jan, 1960, 56 years, there has been only 3 x M 7.0 - 7.9 events. Compared to the
    active Sumatran Trench to the north, the Java Trench has been very quiet.

    Last edited: Apr 10, 2016
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted

Similar Threads - 68km Bunisari Indonesia Date
Magnitude 6.5 Quake - Indonesia Dec 15, 2017
6 Dec 2016 M 6.5 Quake northern Sumatera, Indonesia Dec 6, 2016
Human migration Indonesia Nov 18, 2016
Major M 7.8 quake SW of Sumatra, Indonesia Mar 2, 2016